a small building where tools are stored, often in the backyard of a house.
Origin of toolshed
Also called toolhouse.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a small shed in the garden or yard of a house used for storing tools, esp those for gardening
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012